Railway brake-shoe.



No. 737,185. PATENTED AUG. 25, 1903.

" B. WILLHIDE. I

RAILWAY BRAKE SHOE. v

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lf u ejzzo'r: Bruce Q/h Mm UNITED STATES PatentedAugust 25, 1903.

PATENT OFFICE.

BRUCE WILLHIDE, OF GRAFTON, WEST VIRGINIA.

RAILWAY BRAKE-SHOE.

SPECIFICATION forming part off-Letters Patent No. 737,185, dated August25, 1903. Application filed February 18, 1903- Serialll'o. 143,274. (Nomodel.)

To all whom it may concern:

Be it known that I, BRUCE WILLHIDE, a citizen of the United States,residing at Grafton, in the county of Taylor and State of West Virginia,have invented an Improvement in Brake-Shoes, of which the following is aspecification.

My invention pertains to brake-shoes, and contemplates the provision ofa brake-shoe embodying such a construction that'the suction created bythe rotation of the wheel in connection with which the shoe is used isenabled to draw sand or dust through the shoe to the face thereof, whereit is calculated to nlllaterially increase the braking power of the soe.

The invention also contemplates the provision in the face of the shoe ofone or more chambers adapted to receive the air drawn in with the sandor dust, this with a viewof increasing the braking power and preventingundue heating of the shoe incident to the application of the same to thewheel.

With the foregoing in'mind the invention will be fully understood fromthe following description "and claims, when taken inconnection with theaccompanying drawings, in which- Figure 1 is a vertical centralsectionof the brake-shoe constituting the preferred embodiment of my invention,and Fig. 2 a face View of the same.

Similar letters designate corresponding parts in both views of thedrawings.

In the present and preferred embodiment.

of my invention the brake-shoe comprises a body of cast metal havinglongitudinal chambers Gin its face at opposite sides of its middle andopenings D, communicating with the said chambers and extending to theback of the body, sections A, of wrought iron, set in the face of thebody at the middle and adjacent to the ends thereof, and longitudinalsections B, of wrought-iron, set in the face of the body intermediate ofthe middle and end sections A and atopposite sides of the cham-,

bers C. All of the several chambers and sections are by preferencequadrangularin form, as illustrated. The wrought-iron sections A B,especially'when separated from each other by the metal of the body,serve to reduce the friction and conduce materially to the durability ofthe shoe. I do not desire, however,

to be understood as confining myself to the use of the said sections, asthe shoe may be of any desired general construction without involving adeparture from the scope of my invention.

My invention consists,chiefly', in the chambers O in the face of'thebody, preferably between the wrought-iron sections B and the openings orducts D, extending from the back of the body to the said chambers. Invirtue of the provision of the said chambers and ducts it will beobserved that incident to the rotation of the wheel inconnection withwhich the shoe is used sand will be drawn through the shoe anddistributed over the face thereof-i. e., directly between the shoe andthe perimeter of the wheelwhere it will materially increase the brakingpower of the shoe. It will also be observed that air will be drawnthrough the shoe to the middle portion of the face thereof, where itwill tend to increase the braking power of the shoe-and by prevent--fulness thereof.

Notwithstanding its advantages as pointed out in the foregoingit will beobserved that my brake-shoe is very simple and inexpensive inconstruction and embodies no parts likely to get out of order after ashort period of use.

What I claim, and desire to secure by Letters Patent, is-

1. A brake-shoe comprising a body having a chamber in the longitudinalcenter of its face, and a duct or opening communicating with saidchamber, and adapted to conduct sand and air thereto, and sections setin the face of the body, at opposite sides of the chamber.

2. A brake-shoe comprising a body having chambers in the longitudinalcenter of its face, at opposite sides of-its center, and ducts extendingfrom said chambers to its back, a section set in the middle of the faceof the body, sections set in the face of the body, at opposite sides ofthe chambers, and sections set in the face of the body, between thechambers and the ends of the body.

Signed at Grafton, in the county of Taylor and State of West Virginia,this 21st day of January, 1903.

I BRUCE WILLHIDE. Witnesses:

J. W. SAYRE, L. KI'IZMILLER.

